TM 9-6695-274-14
Figure 1-25. Tracor, Model 527E, Frequency Meter.
Tracor, Model 527E, Frequency Meter (fig. 1-25) is used to determine the fractional frequency difference between two
stable oscillators, to adjust two oscillators to the same frequency, to offset one oscillator from another by a specified
frequency, and to analyze short and long term frequency stability at nominal frequencies of 100 kHz, I MHz, 2.5 MHz, and 5
MHz.
Figure 1-26. Hewlett-Packard, Model 105A OPTION 908, Quartz Oscillator.
Hewlett-Packard, Model 105A OPTION 908, Quartz Oscillator (fig. 1-26) is a light and compact precision'quartz oscillator
for frequency and time standards. This oscillator may be operated from 115 V or 230 V ac power or from an external 22 to
30 V dc source.
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